Non-Mendelian Inheritance
Question 1
Red flower color is incompletely dominant over white flower
color. If two pink flowers are crossed, what percentage of their
offspring will be pink?
A = Red, a = white, Aa = pink
A. 100%
Aa x Aa: gives 50% pink
B. 75%
C. 50%
D. 25%
A
a
A
AA
Aa
a
Aa
Aa
Question 2
Use the following information to answer the next three questions.
In humans, there are three alleles for blood type: A, B, and O. A
and B are codominant over O. Suppose Jim, a man with type A
blood, and Leah, a woman with type B blood, have a child,
Winnie. Jim’s parents both have blood type AB. Leah’s mother has
type B, and her father has type O.
Part 1 of 3: What is the probability that Winnie’s blood type will
be AB?
A.
B.
100%
75%
Jim = AA, Leah = BO
AA x BO gives 50% AB
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C.
D.
E.
50%
25%
0%
Question 3
Part 2 of 3: What is the chance that Winnie’s blood type will be
A?
A. 100%
B. 75%
C. 50% (50% AO)
D. 25%
E. 0%
Question 4
Select one answer.
10 points
Part 3 of 3:What is the chance that Winnie’s blood type will be B?
A. 100%
B. 75%
C. 50%
D. 25%
E. 0%
Question 5
Human height is affected by ______________.
A. genetics only
B. the environment only
C. genetics and the environment
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Question 6
Red flower color is incompletely dominant over white flower
color. If a red flower is crossed with a pink flower, what
percentage of the offspring will be pink?
A. 100%
AA = Red, Aa = pink
B. 75%
AA x Aa will give 50% Aa
(pink)
C. 50%
D. 25%
Question 7
Use the following information to answer the next three questions.
In dogs, colored fur, E, is dominant over colorless fur, e. Black fur
color, B, is dominant over brown fur color, b. The E gene is
epistatic to the B gene. Suppose a yellow male dog is mated with a
black female. The male’s parents were both brown. The female’s
mother was yellow, and her father was brown.
Part 1 of 3: What percentage of the puppies will be yellow?
A.
B.
C.
D.
E.
100%
75%
50%
25%
0%
Question 8
Part 2 of 3: What percentage of the puppies will be black?
A. 100%
B. 75%
C. 50%
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D.
E.
25%
0%
Question 9
Select one answer.
10 points
Part 3 of 3: What percentage of the puppies will be brown?
A. 100%
B. 75%
C. 50%
D. 25%
E. 0%
Human Inheritance
Question 1
A gene that encodes an enzyme required for ribose synthesis is
found on the X chromosome. Females that are heterozygous for the
wild-type and defective mutant allele of this gene will show:
E. 50% of their cells will lack enzymatic activity, the other 50%
will be active.
F. None of their cells will have the enzyme activity since the
chromosome with the inactive allele will cause the other Xchromosome to become condensed.
G. 100% of the enzyme activity in their cells, since the Xchromosome with the inactive gene will be condensed.
H. 50% of the enzyme activity in their cells, since one allele is
inactive.
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Question 2
Nondisjunction in meiosis II results in: ______________________
F. One cell missing a chromosome, one cell with missing a
chromosome and two healthy cells.
(I believe it should be one cell missing a chromosome, one
cell with addition a chromosome and two healthy cells)
G. Two cells missing a chromosome and two healthy cells.
H. Two cells missing a chromosome and two cells with an
additional chromosome.
I. Two cells with an additional chromosome and two healthy cells.
Question 3
According to the pedigree below, this trait is
____________________. (I don’t see any pedigree!!)
F. autosomal recessive
G. Sex-linked recessive
H. autosomal dominant
I. Sex-linked dominant
Question 4
A genetic disorder that is sex-linked cannot also be
___________________.
F. recessive
G. autosomal
H. dominant
I. all of these are possible
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Question 5
Use the following information to answer the next two questions.
In humans, the condition for normal blood clotting (H) is dominant
to hemophilia (h). Suppose William, who has hemophilia, and
Linda, who is a carrier for hemophilia, have a son, Mark. What is
the probability that Mark will have this condition?
D. 100%
E. 75%
F. 50%
G. 0%
X(h)
Y
X(H)
X(H)X(h)
X(H)Y
X(h)
X(h)X(h)
X(h)Y
Question 6
If William and Linda have a daughter, what is the probability that
she will have this condition?
E. 50%
F. 0%
G. 100%
H. 75%
Question 7
Nondisjunction in meiosis I results in
F. two cells missing a chromosome and two cells with an
additional chromosome
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G.
one cell missing a chromosome, one cell with missing a
chromosome and two healthy cells.
H. two cells with an additional chromosome and two healthy
cells
I. two cells missing a chromosome and two healthy cells.
Question 8
In humans, how many alleles of genes found on the X chromosome
do male have?
F. 0
G. 1
H. 2
I.
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Question 9
Genes on the X chromosome are called ______________.
E. somatic
F. sex-linked
G. autosomal
H. epistatic
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Classical Genetics Unit
Question 1
In beans yellow (Y) is dominant to green (y) and smooth (S) is
dominant to wrinkled (s). What are the possible genotypes for the
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offspring of the following cross: Yyss and Yyss.
I.
YYss, yyss
J.
YYSs, YYss, YySs,YySs, Yyss, yySs, yyss
K. YYss, Yyss, yyss
L. YYSS, YYSs, YYss, YySS, YySs,YySs, Yyss, yySS, yySs,
yyss
Question 2
What percentage of the offspring will be yellow and wrinkled in
the example in the previous question?
J.
100%
K. 75%
L. 66%
M. 50%
Question 3
Refering to this diagram:
This trait is ____________. (I don’t see any diagram!!)
J.
K.
L.
M.
Sex-linked dominant
Sex-linked recessive
autosomal dominant
autosomal recessive
Question 4
How many individuals on this pedigree have a genotype where
both alleles cannot be determined with certainty? (That is, how
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many individuals have a genotype with a “_”?) (I don’t see any
pedigree)
J.
K.
L.
M.
1
2
3
0
Question 5
What do we know about the grandparents of this family? (That is,
the two individuals, not shown, that would be at the top of the
family tree). (It relates to the pedigree in Question 4 also )
H. At least one of them must have been heterozygous
I. They both must have been heterozygous.
J.
They both must have had the trait
K. At least one of them must have had the trait.
Question 6
Red flower color is incompletely dominant to white flower color.
Two red flowers are crossed. What percentage of their offspring
will be red?
I. 100%
J.
50%
K. 75%
L. 25%
Question 7
What would be the result of fertilization if egg and sperm were
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produced by mitosis rather than meiosis?
J.
The resulting offspring would have twice as much DNA
as the parents.
K. The resulting offspring would have the same amount of DNA
as the parents.
L. The resulting offspring would have half the amount of DNA
as the parents.
Question 8
Sex-linked disorders
J.
are always dominant
K. are always recessive
L. can be either dominant or recessive
M. are neither dominant nor recessive
Question 9
The condition of having an incorrect number of chromosomes is
called ____________.
I.
epistatis
J.
nondisjunction
K. aneuploidy
L. trisomy
Question 10
In peas purple is dominant to white for flower color. A purple
flower is crossed with a white flower. All the offspring (over 100
plants) produce purple flowers. What is the genotype of the purple
flower?
A. Either PP or Pp (it should be PP for purple flower parent,
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B.
C.
D.
and Pp for all offspring. I don’t really know what the
question is referring to so you may want to check)
PP
Pp
pp
Question 11
Red (R) flower color is incompletely dominant to white (r) flower
color. Two pink flowers are crossed. What percentage of their
offspring will be pink?
A. 100%
B. 75%
C. 50%
D. 25%
Question 12
An individual that expresses the recessive trait of a
dominant/recessive gene
A. must be homozygous
B. must be heterozygous
C. can be either homozygous or heterozygous
Question 13
Two heterozygous individuals are crossed. What percentage of
their offspring will be heterozygous?
A. 50%
B. 75%
C. 100%
D. 25%
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Question 14
Hydrangeas are blue in acidic soil with available aluminum, and
they are pink in alkaline soil without available aluminum, but they
cannot be orange under any soil condition. The color of
hydrangeas is affect by
A. genetics only
B. the environment only
C. genetics and the environment
Question 15
Huntington’s disease is an autosomal dominant disorder. If two
individuals who are heterozygous at this locus breed, what are the
chances that their offspring will develop Huntington’s?
A. 100%
B. 75%
C. 50%
D. 25%
Question 16
Autosomal means that the gene is found on
A. the X chromosomes
B. the Y chromosome
C. either the X or the Y chromosome
D. neither on the X nor the Y
Question 17
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Use the following information to answer the following four
questions.
In dogs, colored fur (E) is dominant to un-colored fur (e). Black fur
color (B) is dominant to brown fur color (b). The E gene is
epistatic to the B gene. A yellow male dog is mated to a black
female. The male’s parents were both brown dogs. The female’s
mother was yellow, and her father was brown.
Q1 of 4: What is the genotype of the male dog in this example?
A.
B.
C.
D.
eeBb
eebb
ee
eeBB
Question 18
Q2 of 4: What is the genotype of the female dog in this example?
A. EeBB
B. EEBb
C. EeBb
D. EEBB
Question 19
Q3 of 4: What percentage of their puppies will be yellow?
A. 100%
B. 75%
C. 50%
D. 25%
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Question 20
Q4 of 4: What percentage of the puppies will be homozygous for
the B gene?
A. 100%
B. 75%
C. 50%
D. 25%
Question 21
Alleles are different versions of a
A. Gene
B. Chromosome
C. Genotype
D. Phenotype
Submit
DNA Function
Question 1
What is the end result of DNA replication?
M. Two DNA molecules each both have two new strands.
N. Two DNA molecules which each have two new strands and
two old strands.
O. Two DNA molecules one with two old strands and one with
two new strands.
P. Two DNA molecules which each have one old strand and
one new strand.
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Question 2
PCR differs from DNA replication in which of the following
ways?
N. Double stranded DNA is the product.
O. A polymerase is needed.
P. Primers are needed.
Q. A single copy of DNA is made.
Question 3
If radioactive nucleotide bases were provided to bacteria during
DNA synthesis, then after cell division you would find:
N. Both bacteria would be equally radioactive.
O. One bacteria would be radioactive and the other not.
P. Neither would be radioactive because DNA polymerase can
distinguish between isotopes.
Question 4
Which of the following statements is FALSE?
N. Both DNA replication and PCR use a DNA template.
O. Both DNA replication and PCR use primers.
P. Both DNA replication and PCR use helicase.
Q. Both DNA replication and PCR use DNA polymerase.
Question 5
In which of the following organisms is it necessary to transport the
mRNA across a membrane prior to protein synthesis. Select all
that apply.
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L.
M.
N.
O.
Animals
Plants
Bacteria
Viruses
Question 6
What process is responsible creating distinct sets of proteins in
skin cell compared to brain cell?
M. DNA Replication
N. DNA Mutation
O. Base Titration
P. Gene Expression
Question 7
The order of amino acids in proteins depends on the order of bases
in the DNA.
M. True
N. False
Question 8
A typical PCR cycle consists of steps at different temperatures,
typically 55, 78 and 98 oC. The correct order of these steps is?
N. 98, 78, 55
O. 78, 55, 98
P. 78, 98, 55
Q. 55, 98, 78
R. 98, 55, 78
S. 55, 78, 98
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Question 9
Does the DNA in the skin cell have the same sequence of bases as
the DNA in the brain cell of the same organism?
M. No, some cells will have mom’s DNA, other cells will have
dad’s DNA.
N. Yes, the sequence of ALL DNA is the same.
O. Yes, the sequence of bases should be the same in all cells
of an organism.
P. No, the DNA sequence will vary based on cell type.
Question 10
Which part of the nucleotide stores the genetic information?
E. Phosphate group
F. Nitrogen base
G. Deoxyribose
H. Ribose
Submit an
Gene Expression
Question 1
Transcription produces:
Q. Proteins from a DNA template
R. RNA from a DNA template
S. DNA from a DNA template
T. Proteins from an RNA template
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Question 2
A gene codes for a protein that is 500 amino acids long. Which of
the following mutations is likely to be the most deleterious?
R. a missense mutation at the fifth codon
S. a nonsense mutation at the 490th codon
T. a nonsense mutation at the fifth codon
U. a missense mutation at the 490th codon
Question 3
The tRNA with UAU as the anticodon would be attached to which
amino acid?
Q.
R.
S.
T.
serine
leucine
tryrosine
isoleucine
Question 4
Which of the following statements is correct regarding DNA
replication, PCR, and transcription?
R. All three processes happen in the cell naturally.
S. All three processes require primers.
T. Both DNA replication and PCR use DNA polymerases.
U. All three processes result in a double stranded product.
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Question 5
Which of the RNA molecules can best be described as a copy of
the gene that codes for a protein? (This RNA molecule carries the
genetic information necessary to build a protein)
P. mRNA
Q. tRNA
R. rRNA
S. all of these
Question 6
Which nitrogen base is not found on nucleotides used to build the
new molecule in transcription?
Q. A
R. T
S. G
T. C
U. U
Question 7
Identify the flow of genetic information during protein synthesis in
a eukaryotic Cell.
O. Transcription produces an mRNA molecule in the
nucleus. The mRNA moves to the cytoplasm where
translation occurs.
P. Translation produces a tRNA molecule in the nucleus; the
tRNA transports a protein to the cytoplasm of the cell.
Q. DNA makes a copy of itself which is transported from the
nucleus to the cytoplasm by a chain of amino acids.
R. mRNA moves a protein to the DNA and makes a copy of the
DNA through translation.
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Question 8
A gene codes for a protein that is 500 amino acids long. A
nonsense mutation occurs at the 6th codon. What is the result?
T. A polypeptide that is 5 amino acids long.
U. A polypeptide that is missing the 6th amino acid.
V. A polypeptide that has a different amino acid at position 6.
W. A polypeptide that has the correct amino acids for the first 5
position, and then incorrect amino acids after that.
Question 9
When a cell is getting ready to divide into two cells (during the
process of mitosis), which process must first happen so that the
entire genome can be passed to the new daughter cells?
Q. DNA replication
R. transcription
S. translation
T. PCR
Question 10
Which of the following mutations would not be noticeable when
studying the expressed traits (or proteins) of an organism?
I. frameshift
J.
nonsense
K. silent
L. missense
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